From: Greg Kurz <groug@kaod.org>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-kernel@vger.kernel.org, Max Reitz <mreitz@redhat.com>,
linux-fsdevel@vger.kernel.org, virtio-fs@redhat.com,
Vivek Goyal <vgoyal@redhat.com>, Greg Kurz <groug@kaod.org>
Subject: [PATCH v2 0/7] fuse: Some fixes for submounts
Date: Fri, 4 Jun 2021 18:11:49 +0200 [thread overview]
Message-ID: <20210604161156.408496-1-groug@kaod.org> (raw)
v2:
- add an extra fix (patch 2) : mount is now added to the list before
unlocking sb->s_umount
- set SB_BORN just before unlocking sb->s_umount, just like it would
happen when using fc_mount() (Max)
- don't allocate a FUSE context for the submounts (Max)
- introduce a dedicated context ops for submounts
- add a extra cleanup : simplify the code even more with fc_mount()
v1:
While working on adding syncfs() support in FUSE, I've hit some severe
bugs with submounts (a crash and an infinite loop). The fix for the
crash is straightforward (patch 1), but the fix for the infinite loop
is more invasive : as suggested by Miklos, a simple bug fix is applied
first (patch 2) and the final fix (patch 3) is applied on top.
Greg Kurz (7):
fuse: Fix crash in fuse_dentry_automount() error path
fuse: Fix crash if superblock of submount gets killed early
fuse: Fix infinite loop in sget_fc()
fuse: Add dedicated filesystem context ops for submounts
fuse: Call vfs_get_tree() for submounts
fuse: Switch to fc_mount() for submounts
fuse: Make fuse_fill_super_submount() static
fs/fuse/dir.c | 58 ++++++---------------------------------------
fs/fuse/fuse_i.h | 14 ++++-------
fs/fuse/inode.c | 56 +++++++++++++++++++++++++++++++++++++++++--
fs/fuse/virtio_fs.c | 3 +++
4 files changed, 69 insertions(+), 62 deletions(-)
--
2.31.1
next reply other threads:[~2021-06-04 16:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-04 16:11 Greg Kurz [this message]
2021-06-04 16:11 ` [PATCH v2 1/7] fuse: Fix crash in fuse_dentry_automount() error path Greg Kurz
2021-06-04 16:11 ` [PATCH v2 2/7] fuse: Fix crash if superblock of submount gets killed early Greg Kurz
2021-06-08 15:08 ` Max Reitz
2021-06-04 16:11 ` [PATCH v2 3/7] fuse: Fix infinite loop in sget_fc() Greg Kurz
2021-06-08 15:12 ` Max Reitz
2021-06-04 16:11 ` [PATCH v2 4/7] fuse: Add dedicated filesystem context ops for submounts Greg Kurz
2021-06-08 15:25 ` Max Reitz
2021-06-04 16:11 ` [PATCH v2 5/7] fuse: Call vfs_get_tree() " Greg Kurz
2021-06-08 15:40 ` Max Reitz
2021-06-04 16:11 ` [PATCH v2 6/7] fuse: Switch to fc_mount() " Greg Kurz
2021-06-08 15:51 ` Max Reitz
2021-06-09 7:45 ` Greg Kurz
2021-06-11 14:44 ` Miklos Szeredi
2021-06-04 16:11 ` [PATCH v2 7/7] fuse: Make fuse_fill_super_submount() static Greg Kurz
2021-06-08 15:52 ` [PATCH v2 0/7] fuse: Some fixes for submounts Max Reitz
2021-06-09 7:46 ` Greg Kurz
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